#!/usr/local/bin/python

import apiclient.gflags
import httplib2

from apiclient.discovery import build
from oauth2client.file import Storage
from oauth2client.client import OAuth2WebServerFlow
from oauth2client.tools import run

FLAGS = apiclient.gflags.FLAGS

# Set up a Flow object to be used if we need to authenticate. This
# sample uses OAuth 2.0, and we set up the OAuth2WebServerFlow with
# the information it needs to authenticate. Note that it is called
# the Web Server Flow, but it can also handle the flow for native
# applications
# The client_id and client_secret are copied from the API Access tab on
# the Google APIs Console
FLOW = OAuth2WebServerFlow(
    client_id='CLIENTID',
    client_secret='CLIENTSECRET',
    scope='https://www.googleapis.com/auth/tasks',
    user_agent='testGTasks')

# To disable the local server feature, uncomment the following line:
#FLAGS.auth_local_webserver = False

# If the Credentials don't exist or are invalid, run through the native client
# flow. The Storage object will ensure that if successful the good
# Credentials will get written back to a file.
storage = Storage('tasks.dat')
credentials = storage.get()
if credentials is None or credentials.invalid == True:
  credentials = run(FLOW, storage)
# 
# # Create an httplib2.Http object to handle our HTTP requests and authorize it
# with our good Credentials.
http = httplib2.Http()
http = credentials.authorize(http)

# Build a service object for intacting with the API. Visit
# the Google APIs Console
# to get a developerKey for your own application.
service = build(serviceName='tasks', version='v1', http=http)

tasks = service.tasks().list(tasklist='@default').execute()

for task in tasks['items']:
  print task['title']